diff --git a/flux2/apps/monitoring/loki-values-configmap.yaml b/flux2/apps/monitoring/loki-values-configmap.yaml
index 285c22e6c21b6818fe47dd45b53ab2a74efd232d..422b5dce329d4b2f951f1085cc23e9c109bddfcb 100644
--- a/flux2/apps/monitoring/loki-values-configmap.yaml
+++ b/flux2/apps/monitoring/loki-values-configmap.yaml
@@ -19,6 +19,14 @@ data:
         - ReadWriteOnce
       size: 10Gi
       annotations: {}
+    # Prevent RO filesystem on /tmp
+    # https://open.greenhost.net/stackspin/stackspin/-/issues/1033
+    extraVolumes:
+      - name: tmp
+        emptyDir: {}
+    extraVolumeMounts:
+      - name: tmp
+        mountPath: /tmp
     config:
       ingester:
         chunk_idle_period: 30m